sherman



No. 625,706. Patented May 23, |899.

L. P. SHERMAN.v `CARD GRINDER.

(Application led Jan. 30, 1899.)

um Model.) 2 sneets-shet 2.

' tion consists in a traversing mechanism of pebeing removed to show the interior construc- LEWIS r. SHERMAN, or BIDDEFORD,

PATENT ptica.

MAINE, ASSIGNOR TO RICHMOND H.

INGERSOLL, OF SAME PLACE.

CARD-GRINDER.

SPECIFICATION forming part of Letters Patent N o. 625,706, dated May 23, 1899.

Application filed January 3 0. l 89 9.

To LZZ whom it may concern,.-

Be it known that I, LEWIS P. SHERMAN, a

citizen of the United States, residing at Bidj deford, in the county of York and State of Maine, have invented certain Improvements in Card-Grinders, of which the following is a specification. j

In that class of card-grinding machines in which the grinding Wheel or cylinder during its revolution is traversed longitudinally in opposite directions on its supporting shaft or shell by means of a feed-screw much difculty has been experienced for the reason that the emery-dust and fine particles of steel collect in the thread of the screw and, mixing with the oil therein, form an abrasive paste, which causes rapid wear of the screw and adjacent parts, while the cotton fibers are also carried into the screw-thread, often packing the same so tightly as to stop the machine.

My invention has for its object to overcome these difculties and to dispense with the feed-V screw and connections heretofore employed for traversing or reciprocating. the grinding wheel or cylinder; and to this end lmy invenculiar construction which is vinclosed within, the grinding-cylinder, whereby it is protected from dust and other extraneous matter and the wear of the parts reduced to a minimum, as hereinafter more fully set forth.

In the accompanying drawings, Figure 1 is a planview of a card-grinder constructed in accordance with my invention. Fig. '2 is a sectional elevation of the saine. Fig. 3 is a transverse vertical section on the line 3 3 of Fig. 2. tical section on the line 4 lof Fig. 1 looking in the direction of the arrow 4, the annular covering-plate or cap of 'the grinding-cylinder tion. Fig. 5 is anenlarg'ed transverse vertical section on the line 5 5 of Fig. 1 looking in the direction of the arrow 5, the coveringplate or cap of the grinding-cylinder being removed to showthe. partsbehind the same. Fig. 6 is a side elevation of the hub and ring removed from the grinding-cylinder. Fig. 7 is a vertical section on the line 7 7 ofFig. 4. Fig. `'Sis a vertical section on the line'S 8 of Fig. 4:.' Fig. 9 is a perspective view of one of Fig. f1 is an enlarged transverse versive. Y

Withinthe cylinder A and encircling the Serial No. 703.916. (No model.)

the friction -traversing feed -wheels and its holder. l

In the said draWings,A represents the'grinding wheel or cylinder, which is adapted to be reciprocated longitudinally upon a stationary shaft or shell B, the journals a b of which are supported in a suitable frame C. The journal a is encircledby a sleeve d, having secured to its inner end a carrier e and at its outer end a driving-pulley f, and at the opposite end of the shaft B is a carrier g, similar' to the carriere and free to be revolved on the journal h. Extending between these two carriers e g and supported in bearings therein are two shafts h h, which pass through apertures in the grinding-cylinder A and serve to rotate the same around the supporting-shaft B, each of said shafts h h having secured to its opposite end two gears ij, the gears t' meshing with a stationary gear 7c, secured 'to one end of the shaft B, and the gears j meshing Awith a stationary gear m, securedto the opposite end of said shaft, whereby as the sleeve d and carrier c are revolved by the pulley f the smaller gears j are carried around the large stationary gears 7a m and the shafts h h thus jmaintained in parallelism with the shaft B as they are rotated around the latter, carrying With them the grinding-cylinder A, which is in this manner revolved on said shaft B to grind the cards brought into contact there- Around the gears at each endof the shaft B is a gear casing or guard n, secured to the adjacent carrier, which supports the ends of the shafts h 71,.

As the grinding-cylinder A is rotated on the shaft B it is simultaneously traversed or reciprocated thereon to bring it into contact ywith all portions of the card being ground by mechanism contained Within said cylinder, which will now be described, reference being had particularly to Figs. '4 to 9, inclushaft B is a hub D, one face of which ts against and is secured by screws 15 to an annular fiange 16 on the inside of the cylinder A` and cast integral therewith, the hub D beling provided on each side with an annular Vflange 18, extending outward, as shown 1n described.

2 i armoe Figs. 7 and 8, and within each end of the cylinder A is screwed a cap or covering-plate p, provided With a central opening q for the passage of the shaft B. The hub D is provided with a series of radial openings 20, arranged at equal distances apart and forming bearings in which are fitted a series of cylindrical holders r, adapted to be oscillated for a purpose to be hereinafter described, one of said holders detached from the hub being shown in Fig. 9. slotted for the reception of a friction feedwheel s, free to rotate on a pin 19, said wheel having rounded edges and bearing against the shaft B, as shown in Figs. 4 and 5, with which it is kept in contact with a strong yielding pressure by means of a spring F., which bears upon the head of ascrew2l, projecting from the outer end of the holder r, said screw being provided with a check-nut 22, and by adjusting this screw the pressure exerted on the holder r by the spring E and the consequent force with which the edge of the Wheel s bears on the shaft B may be regulated as desired. Each spring E, of which there are two, is secured at the center of its length to the inner side of the cylinder A, its opposite ends each bearing on one of the adjustingscrews 21, as shown in Fig. 4. The friction feed-wheels s when acting on the shaftB are each arranged in a plane slightlyinclined to a plane at right angles to the axis of the shaft B, as shown in Fig. 8, the action of these inclined wheels on the shaft B as the cylinder A is revolved thereon causing them to travel in a spiral path around said shaft, and thus feed the cylinder longitudinally thereon to the right or left, according to the direction of inclination of said feed-Wheels.

As soon as the grinding-cylinder A has reached the end of its longitudinal traverse in yone direction the holders r are automatically turned in their bearings 2O to incline the friction feed-wheels s in the opposite direetion, and thus cause the cylinder A to travel back toward the opposite end of the shaft B. The mechanism by which this change of direction is effected will now be Within the cylinder A is fitted a movable ring G, provided at its periphery with two diametrically opposite slots 24, in each of which fits a pin 25, projecting from a crank-arm 26, secured to a rock-shaft 28, having its bearings in the hub D, each of said shafts 28 having secured to one end a curved shipper-lever 29 and to its opposite end another curved shipper-lever 30, extending in the opposite direction, the two levers 29 being on one side of the cylinder A and the two levers 30 on the opposite side of the same. The ring G is also provided with another series of peripheral slots 33, Within which fit pins 35, projecting from crank-arms 36, eX- tending at right angles from the friction feedwheel holders fr, as shown in Figs. 8 and 9, whereby as the ring G is moved slightly around Within the cylinder A it will, through Each of these holders r is the connections described, produce a partial axial rotation of the cylindrical holders r' Within their bearings 2O in order to incline the feed-wheels in the opposite direction, and thus cause the rotating grinding-cylinder A to travel along the shaft B in the opposite direction.

When the grinding-wheel A has reached the end of its traverse in either direction, the end of one of the shipper-levers 28 or 29 on that side contacts with one of' a series of pins or projections 38 on a collar 40, Figs. l and 2, adj ustably secured to the shaft B, said projections extending through the openings q in the covering-plates p into the path of the i11- clined ends of said shipper-levers as they revolve with the grinding-cylinder A, the contact of the end of a'shipper-lever With one of the projections 38 moving said lever outward and causing it to rock its shaft 28 and,through the connections described, move the ring G, which in turn rocks the holders r, thereby changing the inclination of the feed-wheels s from right to left or left to right, as the case may be, when the revolving grinding-cylinder will instantly commence to travel in the opposite direction, theoperation being repeated at the end of each traverse, and in this manner the reciprocation of the grinding-cylinder on its supporting-shaft is effected in a simple and reliable manner, the feed-screw heretofore usually inclosed in the hollow supporting shaft or shell of the grinding-cylinder being entirely dispensed with, as well as the longitudinal slot in said supporting-shell,through which passed a connecting device between the feed-screw and the grinding-cylinder, While as the operating mechanism is not exposed to the flying particles of emery and steel dust and cotton fibers the wear of the parts is reduced to a minimum and the liability of the machine becoming clogged or obstructed is thus prevented, and much inconvenience and delay thereby avoided.

In traversing the cylinder A to the left the .inclined points of the levers 29 are first brought into contact with the projections 38 of the collar 40 on that side, said levers 29 being thus moved outward to reverse the traverse of the cylinder, this movement of theV levers 29 and their shafts 28 causing the opposite levers 30, which are also attached to said shafts 28, to be'swung inward into a position to strike the projections 38 on the opposite collar 40 When the cylinder A arrives at the end of its traverse in that direction, the levers 30 passing over said projections 38, whereby they are swung outward and the opposite levers 29 at they same time swung in- Ward into a position to contact with the projections 38 on that side, as before described. What I claim as my invention, and desire to secure by Letters Patent, is-

1. A card-grinder comprising a stationary supporting shaft or shell, a rotary reciprocating grinding-cylinder thereon, provided with a series of friction feed-wheels mounted in IOO axially-movable holders, and adapted to be alternately inclined in opposite directions to a plane at right angles to the axis of the supporting-shaft, said feed-Wheels bearing on said shaft, and serving to traverse the grinding-cylinder in opposite directions as it is rotated thereon, and means for actuating the feed-Wheel holders, and thereby changing the inclination of the feed- Wheels at the termination of each traverse of the grinding-cylinder, substantially as described.-

2. In a card-grinder, the combination with a stationary supporting-shaft, of a rotary reciprocating grinding-cylinder provided With a series of spring-pressed friction feed-Wheels mounted in axially-movable holders, and. arranged around and bearing on said supporting-shaft, said feed-Wheels .being adapted to be alternately inclined to the right and left of a plane at right angles to the axis of the supporting-shaft, and acting to traverse the grinding-cylinder on said shaft as it is rotated thereon, and means for automatically changing the inclination of the feed-Wheels at the termination of each traverse of the grindingcylinder, to reverse the direction of its longitudinal movement,substantially as described.

3. In a card-grinder, the combination with the stationary supporting-shaft, of the rotating grinding-cylinder thereon, a hub secured Within said cylinder and provided with a series of radial openings or bea-rings, axially-v movable cylindrical holders fitting Within said radial openings, and carrying friction feed- Wheels bearing at their edges on the supporting-shaft, and adapted to be inclined first to one side and then to the other of a plane at right angles to the axis of the, supportingshaft to edect the reciprocation of the grinding-cylinder thereon, and means for automatically changing the inclination of the feed- Wheels at the termination of each traverse of -the grinding-cylinder, substantially as described.

4. In a card-grinder, the combination With Vthe stationary supporting-shaft, of the rotat- `grinding-cylinder thereon,crank-arms projecting from the feed-wheel holders, a ring movable Within the grinding-cylinder and provided With slots for the reception of pins projecting from said crank-arms, rock-shafts provided with crank-arms connected by pins and slots with said ring, and adapted to oscillate the same, shipper-levers secured to opposite sides of said rock-shafts, and pins or projections at opposite ends of the stationary snpporting-shaft for actuating said shipper-levers to turn said ring and thereby change the inclination of the feed-Wheels at the termination of each traverse of the grinding-cylinder, substantially as described.

5. In a card-grinder, the combination With the supporting-shaft, of the rotary recipro-- cating grinding-cylinder, the hub inclosed Within the same and provided With radial openings or bearings, axially-'movable holders fitting Within said radial openings and carrying inclined friction feed-Wheels bearing on said shaft, adjusting-screws projecting from the outer ends of the feed-Wheel holders, and springs bearing on said adjusting-screws, substantially as described.

6. In a card-grinder, the combination with the grinding-cylinder and a stationary supporting-shaft for the same, having a gear secured to each end, of carriers revoluble around journals at the ends of said shaft, one of said carriers being provided With means for driving the same, shafts passing through the grinding-cylinder, and having-their bearings in the carriers, whereby rotary motion isirnparted'to the grinding-cylinder around its supporting-shaft, and gears secured -to said carrier-shafts and meshing with the stationary gears at the ends of the supporting-shaft, whereby as said carriers are rotated, the shafts carried thereby Will be rotated and maintained in parallelism with each other and the stationary shaft around which they revolve, substantially as described.

7. In a card-grinder, the combination With the supportin g-shaft and the rotary reciprocating grinding-cylinder provided with friction feed-Wheels mounted in axially-movable holders, and adapted to be alternately inclined in opposite directions toa plane at rightangles to the axis of the supportingshaft, mechanism for actuating the feedwheel holders, shipper-levers connected With said mechanism and located on opposite sides of the grinding-cylinder, .and collars adjustable upon thesupporting-shaft of said cylinder, and provided with projections adapted to contact with said shipper-levers to change the direction of the traverse of the grindingcylinder, substantially as described.

Witness my handthis 27th day of January,

LEWIS P. SHERMAN. In presence ofi H.'II. GOODWIN, A. L. INGERsoLL.

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